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The perimeter of a rectangle is 52 m. Double the width is 7 m more than the length. Find the dimensions using a system of linear equations?

2 Answers

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  • 5 days ago

    2w + 2l = 52

    2w = l+7

    ==> 3l+7 = 32

    ==> 3l = 45

    ==> l = 15

    2w = l+7

    ==> 2w = 22

    ==> w = 11

    so rectangle is 15 m by 11 m

  • 5 days ago

    2L + 2W = 52;

    2W - L = 7.

    Subtract the 2nd eqn from the first and you get

    3L = 45, so L = 15 and W = 11.

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